Heater has a low pitched rumble
It is in my 1995 class C Lazy Daze. Is this the fan motor going out? Are these heaters repairable or is this a replacement issue?
Forum Discussion
It could be dirt buildup on the squirrel cage blades throwing it a little out of balance. Heaters located near the kitchen area where they can suck in airborne grease particles are particularly prone to build up. The fan motor bushings can fail, but that usually produces a high pitched squeal instead of a rumble. Access to the fans and motor differ depending on the brand and model, but both are replaceable if needed.
